Relevant bibliographies by topics / Saturation Index (SI)

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  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'Saturation Index (SI)'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Saturation Index (SI)"

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Lestari, Devita Satya. "Tingkat Korosivitas Air Terhadap Infrastruktur Sumber Daya Air Berbahan Semen atau Mortar dengan fc’ ≤ 30 MPa pada 9 Waduk di Indonesia." Jurnal Teknik Kimia Indonesia 19, no. 1 (2021): 20. http://dx.doi.org/10.5614/jtki.2020.19.1.4.

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Abstrak. Korosi atau kerusakan yang terjadi di infrastruktur sumber daya air terutama yang berbahan semen atau mortar dengan fc’ atau dengan nilai kuat tekan ≤ 30 Mpa, dapat menimbulkan banyak kerugian. Kerugian yang ditimbulkan antara lain kerugian secara materiil karena korosi menggerogoti semua aset infrastruktur dan tentunya kerugian dalam hal keamanan karena dapat mengancam keselamatan manusia. Korosi merupakan permasalahan yang sangat penting dan tidak akan ada habisnya, karena peristiwa korosi terjadi secara terus-menerus dan berkelanjutan. Peristiwa korosi tidak dapat terjadi dengan se
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Fan, Chunfang, Amy T. Kan, Gongmin Fu, Mason B. Tomson, and Dong Shen. "Quantitative Evaluation of Calcium Sulfate Precipitation Kinetics in the Presence and Absence of Scale Inhibitors." SPE Journal 15, no. 04 (2010): 977–88. http://dx.doi.org/10.2118/121563-pa.

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Summary In this study, the nucleation kinetics of calcium sulfate scale formation in the presence and absence of scale inhibitors has been studied. The nucleation kinetics of calcium sulfates in 0–3.2 M NaCl solution was measured from 0 to 200°C at various supersaturation conditions [saturation index (SI) = 0–1.3]. The phase behavior of these various calcium sulfate phases was monitored by X-ray diffraction (XRD). The inhibition study was performed by evaluating the inhibition efficiency of calcium sulfate precipitation at the same supersaturation and temperature ranges as those of the nucleat
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Rubén Ferreras Vega. "Estratificación de la gravedad del síndrome de distrés respiratorio agudo en pediatría." Revista Electrónica AnestesiaR 11, no. 3 (2019): 3. http://dx.doi.org/10.30445/rear.v11i3.739.

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El síndrome de distrés respiratorio agudo pediátrico (SDRAP) es una entidad propia y diferenciada del adulto. En el año 2.015, se llegó a un consenso en la conferencia Pediatric Acute Lung Injury Consensus Conference (PALICC); dónde se realizan distintas recomenciones según el acuerdo llegado entre sus integrantes. Así, para la estratificación de la gravedad del SDRAP, en pacientes en ventilación mecánica invasiva (VMI), se utiliza el índice de oxigenación (IO). En su defecto, si no es posible obtener la PaO2, utilizaremos el índice de saturación. ABSTRACT Risk Stratification in pediatric acut
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Ducharne, A. "Reducing scale dependence in TOPMODEL using a dimensionless topographic index." Hydrology and Earth System Sciences 13, no. 12 (2009): 2399–412. http://dx.doi.org/10.5194/hess-13-2399-2009.

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Abstract. This paper stems from the fact that the topographic index used in TOPMODEL is not dimensionless. In each pixel i in a catchment, it is defined as xi=ln(ai/Si), where ai is the specific contributing area per unit contour length and Si is the topographic slope. In the SI unit system, ai/Si is in meters, and the unit of xi is problematic. We propose a simple solution in the widespread cases where the topographic index is computed from a regular raster digital elevation model (DEM). The pixel length C being constant, we can define a dimensionless topographic index yi=xi-lnC. Reformulatin
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Promkotra, Sarunya, and Tawiwan Kangsadan. "Geochemical Speciation Associated to Brine and Groundwater." Applied Mechanics and Materials 423-426 (September 2013): 1422–26. http://dx.doi.org/10.4028/www.scientific.net/amm.423-426.1422.

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Chemical speciation of brine and groundwater is examined to assess the distribution of chemical stability and behaviors of their solutions. Brine and groundwater are randomly collected from Ban Muang and Wanon Niwat District, Sakon Nakhon province. Hydrochemical parameters and also chemical compositions of their major ions are examined to evaluate the hydrochemical facies. Brine is generally indicated the Na-Cl type. For major cations, groundwater expresses mainly the sodium and calcium ions. However, brine presents dominantly sodium and potassium ions. Major anions of groundwater display prin
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Ducharne, A. "Explicitation of an important scale dependence in TOPMODEL using a dimensionless topographic index." Hydrology and Earth System Sciences Discussions 6, no. 2 (2009): 1621–49. http://dx.doi.org/10.5194/hessd-6-1621-2009.

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Abstract. This paper stems from the fact that the topographic index used in TOPMODEL is not dimensionless. In each pixel i in a catchment, it is defined as xi=ln (ai /Si), where ai is the specific contributing area per unit contour length and Si is the topographic slope. In the SI unit system, ai /Si is in meters, and the unit of xi is problematic. Even if all the equations in TOPMODEL are homogeneous, it is confusing to use the logarithm of a non-dimensionless quantity as an index, and we propose a simple solution to this issue in the nowadays widespread cases where the topographic index is c
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Naskar, S., S. D. Wolter, C. A. Bower, B. R. Stoner, and J. T. Glass. "Effect of film chemistry on refractive index of plasma-enhanced chemical vapor deposited silicon oxynitride films: A correlative study." Journal of Materials Research 23, no. 5 (2008): 1433–42. http://dx.doi.org/10.1557/jmr.2008.0176.

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Thick SiOxNy films were deposited by radiofrequency (rf) plasma chemical vapor deposition using silane (SiH4) and nitrous oxide (N2O) source gases. The influence of deposition conditions of gas flow ratio, rf plasma mixed-frequency ratio (100 kHz, 13.56 MHz), and rf power on the refractive index were examined. It was observed that the refractive index of the SiOxNy films increased with N and Si concentration as measured via x-ray photoelectron spectroscopy. Interestingly, a variation of refractive index with N2O:SiH4 flow ratio for the two drive frequencies was observed, suggesting that oxynit
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Moncheva, S., V. Dontcheva, G. Shtereva, L. Kamburska, A. Malej, and S. Gorinstein. "Application of eutrophication indices for assessment of the Bulgarian Black Sea coastal ecosystem ecological quality." Water Science and Technology 46, no. 8 (2002): 19–28. http://dx.doi.org/10.2166/wst.2002.0136.

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The present paper is an attempt to test the applicability of the trophic state index (TRIX) for scaling the eutrophication along the Bulgarian Black Sea coastal zone in concert with a number of chemical and biological descriptors aimed at selection of relevant indicators of marine coastal area ecological quality. The following environmental parameters have been considered: to, salinity, nutrients - inorganic P, N and dissolved Si, dissolved oxygen and oxygen saturation, phytoplankton - taxonomic structure, abundance and biomass, chlorophyll a, zooplankton - taxonomic structure, abundance and b
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Skoczko, Iwona, and Ewa Szatyłowicz. "Experiments on Water Stabilization." Proceedings 16, no. 1 (2019): 3. http://dx.doi.org/10.3390/proceedings2019016003.

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The aim of the study was assessment of groundwater stabilization. Corrosive water effects on metals include complex electrochemical and biochemical processes. None of the water components remain indifferent to the metal and can accelerate or delay its corrosion. On the basis of the conducted tests of water samples, the aggressiveness and corrosivity indicators were calculated. Conducted research included analyses of raw and treated water. Raw water was taken as groundwater. Then it was treated in individual and complex processes such as aeration, filtration and ion exchange. Water aggressivene
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Bijak, Szymon. "Selected properties of organic soils under boreal mire spruce forest in the Romincka Forest, NE Poland." Soil Science Annual 68, no. 4 (2017): 182–88. http://dx.doi.org/10.1515/ssa-2017-0023.

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Abstract The paper presents selected properties of the organic soils developed in boreal mire spruce forests (Sphagno girensohnii-Piceetum) in the Romincka Forest (NE Poland). Additionally, the relationship between soil fertility and forest stand productivity was investigated. Data from 12 soil profiles, differing in terms of peatland ecological type (raised bog, transitional bog and fen) was used. The significance of the differences in soil properties among peatland types was assessed with the Kruskal-Wallis test. Soil fertility was described using soil trophic index (SIGo), whereas stand pro
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Dissertations / Theses on the topic "Saturation Index (SI)"

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Xaza, Abongile. "Investigating hydrogeochemical processes of groundwater, Heuningnes Catchment, South Africa." University of the Western Cape, 2020. http://hdl.handle.net/11394/7961.

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Masters of Science<br>This study was conducted to investigate hydrogeochemical processes controlling the evolution of groundwater chemistry and their influence on water quality in the Heuningnes Catchment. The role or influence of hydrogeochemical processes in groundwater quality in aquifer systems remains poorly understood. One of the ways of improving such understanding is to employ different techniques to explore key processes that govern groundwater quality in aquifer systems. Therefore, the present study investigated hydrogeochemical processes of groundwater resources and identified key p
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Conference papers on the topic "Saturation Index (SI)"

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Paz, Paulo A., Jean-David Caprace, João F. Cajaiba, and Theodoro A. Netto. "Prediction of Calcium Carbonate Scaling in Pipes Using Artificial Neural Networks." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61233.

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Scaling problems in oil production happen frequently. There are chemical and mechanical treatments to fight with this problem. Knowing if they will happen under particular circumstances of temperature and pressure is the best way to avoid or to control their apparition. This paper shows the most important characteristics that improve the calcium carbonate scaling accumulation in pipelines in order to understand how kinetic and thermodynamic characteristics affects the scaling process. Monitoring the scaling process using the Saturation Index was considered a method for scaling solutions, this
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Yan, Chao, Amy T. Kan, Fangfu Zhang, Ya Liu, Mason B. Tomson, and Ross C. Tomson. "Systematic Study of Barite Nucleation and Inhibition with Various Polymeric Scale Inhibitors by Novel Laser Apparatus." In SPE International Oilfield Scale Conference and Exhibition. SPE, 2014. http://dx.doi.org/10.2118/spe-169787-ms.

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Abstract This work reports a reliable and systematic study of barite nucleation kinetics in the presence of scale inhibitors from 4 °C to 90 °C and at various conditions. In this study, we designed and developed an apparatus to study the nucleation kinetics of barite scale formation by monitoring the change of photo-current created by 5 mW, 635 nm red laser. The photo-detector has a wide wavelength range where sensitivity has a peak at 960 nm. A set of convex and concave lens were used to control the beam diameter so that it can pass through more particles and increase the sensitivity. Tempera
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Xu, Bo, Tao Chen, Ping Chen, et al. "Influence of Calcium and Bicarbonate Ions on the Kinetics of CaCO3 Formation at High Temperature in the Absence and Presence of Scale Inhibitors." In SPE International Oilfield Scale Conference and Exhibition. SPE, 2014. http://dx.doi.org/10.2118/spe-169769-ms.

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Abstract The calcium and bicarbonate ions, present in the produced waters in the oilfields, are two major scaling ions in CaCO3 formation. In the last decade, a lot of studies have been focused on the thermodynamic or kinetics of CaCO3 formation, including the effects of scaling ions, temperature, pH, pCO2, etc. Seldom studies are focused on the kinetics of calcium carbonate surface deposition with different levels of calcium and bicarbonate, especially in the presence of scale inhibitors. In the work reported herein, dynamic loop tests were carried out to study the kinetics of CaCO3surface de
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